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VulnerabilitiesApr 29, 2026

CVE-2026-31431 a/k/a CopyFail > Linux LPE > Description sounds like AI slop > Exploit i...

CVE-2026-31431 (CopyFail) Linux privilege escalation affects kernels 2017–present.

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Summary

CVE-2026-31431, dubbed CopyFail, is a Linux local privilege escalation vulnerability impacting every Linux kernel version from 2017 to the present. A proof-of-concept exploit has been released, despite the vulnerability description appearing to be AI-generated. The flaw allows unprivileged users to escalate privileges on affected systems.

Indicators of Compromise

  • cve — CVE-2026-31431

Entities

Linux kernel (technology)